I'm having a problem with my G2X. I just switched from iPhone to the G2X today. I can stream audio to Sync without issues. However I'm having problems making phone calls. The audio doesn't go to sync, nor does it go to the phone. No one can hear me talk. Any ideas? Also, I'm trying to figure out how big of an microSD I can put in the phone. Also how can I sync music to my phone other than dragging it onto the card?